PROGRAMMABLE LIGHT-ACTIVATED TIMER

The LS7217 is a Programmable Timer IC designed to turn on
a relay at night and turn off the relay at dawn or after a select-
able number of hours. Figure 2 shows a typical application
schematic. The circuit is powered from a Step-down trans-
former and the output drives low-voltage AC loads such as in-
candescent light bulbs. By LSI Computer Systems, Inc.